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Bart B. · January 13, 2013, 06:38 PM

When the .308 Win. was "the" round for NRA high power matches for rapid fire at 200 and 300 yards and slow fire at 200 yards, 41 grains of IMR4064 had a good track record of winning matches and setting records. IMR4064 has less velocity change per 1/10th grain of charge weight than either IMR4895 or H4895. Folks just metered charges, never weighed them, and test groups from good rifles with good barrels were about an inch at 300 yards.

44 grains of IMR4064 loaded in Federal Gold Medal .308 Match under Sierra 168's (a max load) was also popular with M14 and M1 competitors on service rifle teams. The USMC and US Army handloaded a lot of Federal cases with that load for their semiautos. This same load seemed to do so well across all sorts of barrel makes as well as 1:10, 1:11 and 1:12 twist barrels from 22 to 26 inches in both bolt guns and semiautos. A close second place load that was pretty much a standard was 42 grains of IMR4895 under a 168 in those cases; it shot well in everything well built with a good barrel.

January 13, 2013, 06:38 PM	#6
Bart B. Senior Member Join Date: February 15, 2009 Posts: 8,927	When the .308 Win. was "the" round for NRA high power matches for rapid fire at 200 and 300 yards and slow fire at 200 yards, 41 grains of IMR4064 had a good track record of winning matches and setting records. IMR4064 has less velocity change per 1/10th grain of charge weight than either IMR4895 or H4895. Folks just metered charges, never weighed them, and test groups from good rifles with good barrels were about an inch at 300 yards. 44 grains of IMR4064 loaded in Federal Gold Medal .308 Match under Sierra 168's (a max load) was also popular with M14 and M1 competitors on service rifle teams. The USMC and US Army handloaded a lot of Federal cases with that load for their semiautos. This same load seemed to do so well across all sorts of barrel makes as well as 1:10, 1:11 and 1:12 twist barrels from 22 to 26 inches in both bolt guns and semiautos. A close second place load that was pretty much a standard was 42 grains of IMR4895 under a 168 in those cases; it shot well in everything well built with a good barrel. Last edited by Bart B.; January 13, 2013 at 06:44 PM.